An easy way to clean them is to drive a 6" spike through a 2x4[some guys use the side of a ice fishing shack] Impale the Burbot[Ling] through the head back up.Cut the skin around the neck then cut along the spine to the tail and the underside along the fin.Grab the skin with vicegrips and pull away from the head.The skin pulls off like a sock.Fillet leaving belly and ribcage intact to the tail.No bones.............Harold [you can peel cat fish same way]